The idea is clever. I like the use of selective desaturation. Because of the title and the feminine nature of the wings the manly clothes seem out of place. If not for the title I wouldn't have that impression. I first interpreted this as a child hiding within her father's closet. (I see you have a similar comment to this.)
The technicals seem okay. I don't much care for the large hole created by the dark shirt in the middle of the frame...blank spaces like this (whether black or white) can suck the energy out of an image and make it feel improperly exposed.
The composition could be a little cleaner. I feel the tilt of the bar within the frame gives an off-kilter feel to the image that seemingly has no purpose in regards to subject interpretation.
With so much butterfly showing I kinda expect to find a child attached to those wings. Maybe less of the wings showing would carry the concept of "hiding" further?
Overall, a refreshingly different idea for the challenge.
You have tried to captue a wonderful idea here and the selective desat makes the eues rush to the wings, my only nippik in this is that the wardrobe has all men's clothing whereas the pink butterfly signifies something very feminine. i dunno but i surely feel that a women's wardrobe would have added more punch to it